Beth has 28 math problems for homework. She has 4 times as many problems as her sister, Mary. Which equation shows how many problems Mary (m) has?
a.) 28 x 4 = m b.) 28 ÷ 7 = m c.) 7 x m = 28 d.) 28 ÷ 4 = m

where are the options?

step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

75

step-by-step explanation: